Four-phase charge-coupled device having an oversized electrode

摘要

In a 4-phase CCD with 90 DEG overlap of the clock voltages, the area below two clock electrodes may be used for the storage of charge packets which thus can be 2x as large as in conventional modes of operation. By choosing the penultimate electrode before the reading stage to be approximately 2.5x as large as the other electrodes, this double charge packet can be transferred undivided in time to the output diode, a feature which is particularly advantageous for further signal processing.